Add to Favorite Sellers. Muffler Fits International IH 706 806 Tractors 384345R1. Quality Aftermarket Muffler Fits International Harvester IH 706 Gas or D310 Diesel; (806 Gas or Diesel) Tractors Specifications Silver vertical round body 2-3/4 inlet length 2-15/16 inlet inside diameter 17 shell length 5-1/2 shell diameter 13-1/4 outlet length 3 outlet outside diameter 34-1/8 overall length Replacement Numbers 384345R1, 384345R91. We recommend verifying the proper fit for your application with a parts catalog or other reference documents. All aftermarket items have been hand selected by our team and are continuously monitored by a quality control department. Should a craftsmanship or fitment concern be identified, JJAgParts will be sure to work with our customers to stand behind our products. Be sure to check out our other listings for great aftermarket and NOS items! Don’t forget to leave us feedback and we will be sure to do the same! . Thank you for this opportunity to earn your business! Thank you for looking! We appreciate the opportunity to earn your business. Feel free to ask any questions you may have.